I've used the ZSA Moonlander (https://www.zsa.io/moonlander/) as my main driver for the past 6 months, except I've replaced the right hand thumb pad with a custom mouse mod. I basically pulled the electronics from a Logitec trackball mouse and machined a casing for it to clip to the keyboard once the thumb buttons are removed.
It's been wonderful. I'm reaching the stage where I'm just as dexterous now with my thumb as I was with my regular mouse, and my right hand isn't constantly searching for the home row when I return to type. I can't recommend it enough.